Do you want to know what card to upgrade to? Or do you mean how do you upgrade it literally? Cause if it's the ladder, what you do is take off the side of the computer case, then look towards the bottom of the motherboard. There will be a few slots, and in one of the slots will be the graphics card. There's probably a screw in the bracket holding it in and the wing below the graphics card has to be pushed in to pull it out. Take out the screw, gently push the wing, then pull it out.